@ white focus: no mate i put an english reverse in it for the symertry

@ underdog st170: difficult to say becouse i dont know what the bhp was before the bluefinn.
normally the power should go up by at leat 8 bhp.

I have seen standard st170 on rollers stuggling to make 155 bhp so if that is the case it is worth the money imo.
It also removes the mid range power dip a lott.